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This set of tough Chemical Engineering questions and answers focuses on “Effects of Mixing into Energy Balance”.

1. What is the heat of solution in the energy balance?
a) Heat of dissolution
b) Heat of reaction
c) Heat of formation
d) None of the mentionedView answer

Answer: b
Explanation: Heat of solution in the energy balance is the heat of reaction.

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2. What is required in the calculation of heat of reaction in the energy balance of mixing?
a) Heat of formation
b) Sensible Heat
c) Latent heat
d) All of the mentionedView answer

Answer: a
Explanation: Heat of formation is required in the calculation of heat of reaction in the energy balance of mixing.

3. How is the graph of heat of solution and dilution?
a) Straight Line
b) Curve with finite heat of solution at infinite dilution
c) Curve with Infinite heat of solution at infinite dilution
d) None of the mentionedView answer

Answer: b
Explanation: Heat of solution is a finite curve at infinite dilution.

4. Which of the following is required for the calculation of heat of reaction in the energy balance?
a) Heat of solution at reference state
b) Heat of dissolution at reference state
c) Heat of formation
d) All of the mentionedView answer

Answer: d
Explanation: Heat of solution at reference state, Heat of dissolution at reference state and heat of formation all are required in the calculation of Heat of reaction.

5. What is the heat of dissolution if the heat of reaction is 10 J in the energy balance?
a) -10 J
b) 10 J
c) 0
d) Cannot be determinedView answer